package com.feizi.controller;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;

import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.internal.util.AlipaySignature;
import com.alipay.api.request.AlipayTradePagePayRequest;
import com.feizi.alipay.AlipayConfig;
import com.feizi.entity.OrderinfoEntity;
import com.feizi.service.OrderService;

@Controller
public class AlipayController {
	
	@Autowired
	private OrderService orderService;
	
	/**
	 * 获取订单数据接口
	 * @param WIDout_trade_no
	 * @param WIDtotal_amount
	 * @param WIDsubject
	 * @param request
	 * @param response
	 * @throws AlipayApiException
	 * @throws IOException
	 */
	@RequestMapping("/toAlipayPage.do")
	public void toAlipayPage( String WIDout_trade_no,String WIDtotal_amount,String WIDsubject,
			HttpServletRequest request,
			HttpServletResponse response
			) throws AlipayApiException, IOException {
		
		//获得初始化的AlipayClient
		AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.gatewayUrl, AlipayConfig.app_id, AlipayConfig.merchant_private_key, "json", AlipayConfig.charset, AlipayConfig.alipay_public_key, AlipayConfig.sign_type);
		
		//设置请求参数
		AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();
		alipayRequest.setReturnUrl(AlipayConfig.return_url);
		alipayRequest.setNotifyUrl(AlipayConfig.notify_url);
		
		
		//商户订单号，商户网站订单系统中唯一订单号，必填
		String out_trade_no = WIDout_trade_no;
		//付款金额，必填
		String total_amount = WIDtotal_amount;
		//订单名称，必填
		String subject = WIDsubject;
		//商品描述，可空
		String body = null;
		
		alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\"," 
				+ "\"total_amount\":\""+ total_amount +"\"," 
				+ "\"subject\":\""+ subject +"\"," 
				+ "\"body\":\""+ body +"\"," 
				+ "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");
		
		//请求
        String result = alipayClient.pageExecute(alipayRequest).getBody();
		
		response.setContentType("text/html;charset=" + AlipayConfig.charset);
		
		response.getWriter().write(result);//直接将完整的表单html输出到页面
		
		response.getWriter().flush();
		response.getWriter().close();
	}
	
	/**
	 * 
	 * @param model
	 * @return
	 */
	@RequestMapping("/notifyUrl.do")
	public String notifyUrl(Model model) {
		
		
		return "redirect:/";
	}
	
	/**
	 * 支付后的回调路劲
	 * @param request
	 * @param response
	 * @param model
	 * @return
	 * @throws AlipayApiException
	 * @throws UnsupportedEncodingException
	 */
	@RequestMapping("/returnUrl.do")
	public String returnUrl(HttpServletRequest request, HttpServletResponse response,Model model) throws AlipayApiException, UnsupportedEncodingException {
		//获取支付宝POST过来反馈信息
        Map<String,String> params = new HashMap<String,String>();
        Map<?, ?> requestParams = request.getParameterMap();
        for (Iterator<?> iter = requestParams.keySet().iterator(); iter.hasNext();) {
            String name = (String) iter.next();
            String[] values = (String[]) requestParams.get(name);
            String valueStr = "";
            for (int i = 0; i < values.length; i++) {
                valueStr = (i == values.length - 1) ? valueStr + values[i]
                            : valueStr + values[i] + ",";
            }
            //乱码解决，这段代码在出现乱码时使用。
            //valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");
            params.put(name, valueStr);
        }
        //切记alipaypublickey是支付宝的公钥，请去open.alipay.com对应应用下查看。
        boolean signVerified = AlipaySignature.rsaCheckV1(params, AlipayConfig.alipay_public_key, AlipayConfig.charset,AlipayConfig.sign_type);
        if(signVerified) {
            //商户订单号
            String out_trade_no = new String(request.getParameter("out_trade_no").getBytes("ISO-8859-1"),"UTF-8");
            //支付宝交易号
            String trade_no = new String(request.getParameter("trade_no").getBytes("ISO-8859-1"),"UTF-8");
            //付款金额
            String total_amount = new String(request.getParameter("total_amount").getBytes("ISO-8859-1"),"UTF-8");
            System.out.println("！！！！！！！！！！！！！！！！！已下订单："+out_trade_no+",支付宝交易号："+trade_no+",金额为："+total_amount+"！！！！！！！！！！！！！！！！！");
            
            
            //根据订单号查询订单主表          
            List<OrderinfoEntity> order = orderService.findOrderinfo(out_trade_no);
            if(order.size() < 1){//小于1代表没有该订单
                signVerified = false;
                request.setAttribute("signVerified", signVerified); 
                model.addAttribute("reason", "该订单号不存在");
                return "nook";
            }else{
            	//存在该订单就行订单的状态修改为待发货
            	orderService.upOrderinfo(out_trade_no);
            	model.addAttribute("reason","系统：成功支付。");
            	System.out.println("！！！！！！！！！！！！！！！！！订单号："+out_trade_no+"，已付款！！！！！！！！！！！！！！！！！");
                return "ok";
            }
            
            
        }else{
        	model.addAttribute("reason", "验签失败");
        }
        request.setAttribute("signVerified", signVerified);
        //返回首页
        return "nook";
	}
	
	
}
